VendorsCiscoios_xe3.9.1as
Vulnerabilities

Cisco IOS Xe 3.9.1as

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

18CVEs
CVE-2019-1737
Cisco IOS and IOS XE Software IP Service Level Agreement Denial of Service Vulnerability
Published 2019-03-27 · Modified
8.6EPSS 0.026
CVE-2019-1752
Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability
Published 2019-03-28 · Modified
8.6EPSS 0.025
CVE-2021-1446
Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability
Published 2021-03-24 · Modified
8.6EPSS 0.015
CVE-2025-20200
A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with privilege level 15 to elevate privileges to root on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation when processing specific configuration commands. An attacker could exploit this vulnerability by including crafted input in specific configuration commands. A successful exploit could allow the attacker to elevate privileges to root on the underlying operating system of an affected device. The security impact rating (SIR) of this advisory has been raised to High because an attacker could gain access to the underlying operating system of the affected device and perform potentially undetected actions. Note: The attacker must have privileges to enter configuration mode on the affected device. This is usually referred to as privilege level 15.
Published 2025-05-07 · Analyzed
8.2EPSS 0.002
CVE-2025-20197
A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with privilege level 15 to elevate privileges to root on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation when processing specific configuration commands. An attacker could exploit this vulnerability by including crafted input in specific configuration commands. A successful exploit could allow the attacker to elevate privileges to root on the underlying operating system of an affected device. The security impact rating (SIR) of this advisory has been raised to High because an attacker could gain access to the underlying operating system of the affected device and perform potentially undetected actions. Note: The attacker must have privileges to enter configuration mode on the affected device. This is usually referred to as privilege level 15.
Published 2025-05-07 · Analyzed
8.2EPSS 0.002
CVE-2025-20199
A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with privilege level 15 to elevate privileges to root on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation when processing specific configuration commands. An attacker could exploit this vulnerability by including crafted input in specific configuration commands. A successful exploit could allow the attacker to elevate privileges to root on the underlying operating system of an affected device. The security impact rating (SIR) of this advisory has been raised to High because an attacker could gain access to the underlying operating system of the affected device and perform potentially undetected actions. Note: The attacker must have privileges to enter configuration mode on the affected device. This is usually referred to as privilege level 15.
Published 2025-05-07 · Analyzed
8.2EPSS 0.002
CVE-2016-1350
Cisco IOS 15.3 and 15.4, Cisco IOS XE 3.8 through 3.11, and Cisco Unified Communications Manager allow remote attackers to cause a denial of service (device reload) via malformed SIP messages, aka Bug ID CSCuj23293.
Published 2016-03-26 · Modified
7.8EPSS 0.033
CVE-2016-6386
Cisco IOS XE 3.1 through 3.17 and 16.1 on 64-bit platforms allows remote attackers to cause a denial of service (data-structure corruption and device reload) via fragmented IPv4 packets, aka Bug ID CSCux66005.
Published 2016-10-05 · Modified
7.8EPSS 0.029
CVE-2016-6378
Cisco IOS XE 3.1 through 3.17 and 16.1 through 16.2 allows remote attackers to cause a denial of service (device reload) via crafted ICMP packets that require NAT, aka Bug ID CSCuw85853.
Published 2016-10-05 · Modified
7.8EPSS 0.019
CVE-2016-1384
The NTP implementation in Cisco IOS 15.1 and 15.5 and IOS XE 3.2 through 3.17 allows remote attackers to modify the system time via crafted packets, aka Bug ID CSCux46898.
Published 2016-04-20 · Modified
7.5EPSS 0.025
CVE-2020-3213
Cisco IOS XE Software Privilege Escalation Vulnerability
Published 2020-06-03 · Modified
7.2EPSS 0.004
CVE-2020-3215
Cisco IOS XE Software Privilege Escalation Vulnerability
Published 2020-06-03 · Modified
7.2EPSS 0.004
CVE-2020-3209
Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability
Published 2020-06-03 · Modified
7.2EPSS 0.003
CVE-2022-20694
Cisco IOS XE Software Border Gateway Protocol Resource Public Key Infrastructure Denial of Service Vulnerability
Published 2022-04-15 · Modified
7.1EPSS 0.012
CVE-2021-1398
Cisco IOS XE Software Arbitrary Code Execution Vulnerability
Published 2021-03-24 · Modified
6.9EPSS 0.004
CVE-2025-20201
A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with privilege level 15 to elevate privileges to root on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation when processing specific configuration commands. An attacker could exploit this vulnerability by including crafted input in specific configuration commands. A successful exploit could allow the attacker to elevate privileges to root on the underlying operating system of an affected device. The security impact rating (SIR) of this advisory has been raised to High because an attacker could gain access to the underlying operating system of the affected device and perform potentially undetected actions. Note: The attacker must have privileges to enter configuration mode on the affected device. This is usually referred to as privilege level 15.
Published 2025-05-07 · Analyzed
6.7EPSS 0.002
CVE-2024-20414
A vulnerability in the web UI feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected system through the web UI. This vulnerability is due to incorrectly accepting configuration changes through the HTTP GET method. An attacker could exploit this vulnerability by persuading a currently authenticated administrator to follow a crafted link. A successful exploit could allow the attacker to change the configuration of the affected device.
Published 2024-09-25 · Analyzed
6.5EPSS 0.003
CVE-2024-20309
A vulnerability in auxiliary asynchronous port (AUX) functions of Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload or stop responding. This vulnerability is due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. An attacker could exploit this vulnerability by reverse telnetting to the AUX port and sending specific data after connecting. A successful exploit could allow the attacker to cause the device to reset or stop responding, resulting in a denial of service (DoS) condition.
Published 2024-03-27 · Analyzed
5.6EPSS 0.001